Light-induced pseudo-magnetic fields in three-dimensional topological semimetals

Abstract

In this work, we show that suitably designed spatially varying linearly polarized light provides a versatile route to generate and control pseudo-magnetic fields in Weyl semimetals through Floquet engineering. Within a high-frequency expansion, we derive an effective axial gauge potential ${\mathbf{A}}_5(\mathbf{r})$ whose curl gives the pseudo-magnetic field ${\mathbf{B}}_5(\mathbf{r})$. By mapping the light profile to ${\mathbf{A}}_5(\mathbf{r})$, we establish design principles for pseudo-magnetic field textures that mimic strain-induced gauge fields while offering key advantages like dynamic control, full reversibility, spatial selectivity, and absence of material deformation. We compare the Landau-level spectra produced by uniform real and pseudo-magnetic fields and also analyze both their linear optical conductivity and the second-order dc responses. Our results enable real-time manipulation of pseudo-magnetic fields and predict clear experimental signatures for optically engineered gauge fields in topological semimetals.

16 pages, 13 figures

References in corpus (41)

• Weyl and Dirac Semimetals in Three Dimensional Solids
• Energy gaps, topological insulator state and zero-field quantum Hall effect in graphene by strain engineering
• Beyond Dirac and Weyl fermions: Unconventional quasiparticles in conventional crystals
• Floquet Engineering of Quantum Materials
• High-frequency approximation for periodically driven quantum systems from a Floquet-space perspective
• Landau Quantization and Quasiparticle Interference in the Three-Dimensional Dirac Semimetal Cd3As2
• Creating stable Floquet-Weyl semimetals by laser-driving of 3D Dirac materials
• Brillouin-Wigner theory for high-frequency expansion in periodically driven systems: Application to Floquet topological insulators
• Chiral anomaly from strain-induced gauge fields in Dirac and Weyl semimetals
• Floquet Weyl Semimetal Induced by Off-Resonant Light
• Inhomogeneous Weyl and Dirac semimetals: Transport in axial magnetic fields and Fermi arc surface states from pseudo Landau levels
• Magneto-optical conductivity of Weyl semimetals
• Optical Hall conductivity in ordinary and graphene QHE systems
• Type-II Weyl cone transitions in driven semimetals
• Pseudo-electromagnetic fields in topological semimetals
• Optical Hall Effect in the Integer Quantum Hall Regime
• Chiral pumping effect induced by rotating electric fields
• Magnetic textures and dynamics in magnetic Weyl semimetals
• Optical signatures of multifold fermions in the chiral topological semimetal CoSi
• Emergent Weyl nodes and Fermi arcs in a Floquet Weyl semimetal
• Universal charge and current on magnetic domain walls in Weyl semimetals
• Qsymm: Algorithmic symmetry finding and symmetric Hamiltonian generation
• Magneto-optical conductivity in generic Weyl semimetals
• Linear Response Theory and Optical Conductivity of Floquet Topological Insulators
• Magneto-optical conductivity in the type-I and type-II phases of Weyl/multi-Weyl semimetals
• Optical conductivity of multifold fermions: the case of RhSi
• Generation of strain-induced pseudo-magnetic field in a doped type-II Weyl semimetal
• Localized charge in various configurations of magnetic domain wall in Weyl semimetal
• Pressure tuning domain-wall chirality in noncentrosymmetric magnetic Weyl semimetal CeAlGe
• Giant periodic pseudo-magnetic fields in strained kagome magnet FeSn epitaxial films on SrTiO${}_3$(111) substrate
• Axial anomaly generation by domain wall motion in Weyl semimetals
• All Optical Measurement Proposed for the Photovoltaic Hall Effect
• Cubic Hall viscosity in three-dimensional topological semimetals
• Photogalvanic response in multi-Weyl semimetals
• Landau level spectrum and magneto-optical conductivity in tilted Weyl semimetal
• Magnetic field induces giant nonlinear optical response in Weyl semimetals
• Pseudo field effects in type II Weyl semimetals: new probes for over tilted cones
• Light-induced anomalous Hall conductivity in massive 3D Dirac semimetal Co${}_3$Sn${}_2$S${}_2$
• Controllable Weyl Nodes and Fermi Arcs from Floquet Engineering Triple Fermions
• Chiral gauge field in fully-spin polarized Weyl semimetal with magnetic domain walls
• Flat bands and multi-state memory devices from chiral domain wall superlattices in magnetic Weyl semimetals